#include<stdio.h>

int myfuction(int x,int y);

int main()
{
	int x, y;
	
	printf("Enter two integers:");
	scanf("%d %d", &x,&y);

	printf("%d\n" ,myfuction(x,y));

	return 0;
}

int myfuction(int x, int y)
{
	if(x<0||y<0)
		return x-y;
	else
		return myfuction(x-1,y)+myfuction(x,y-1);
}

